https://devzone.nordicsemi.com/f/nordic-q-a/89341/uart-buffer-overflowI&#39;m using two nRf52833 DKs as BLE Central and peripheral and I Used &quot;Zephyr/Samples/bluetooth/central uart&quot; and &quot;Z ephyr/Samples/bluetooth/Peripheral uart&quot; to start with. I&#39;m connecting an external microcontroller to BLE central through UART and tryingen-USTelligent Community 13Sat, 25 Jun 2022 15:13:50 GMThttps://devzone.nordicsemi.com/thread/374228?ContentTypeID=1Sat, 25 Jun 2022 15:13:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2a2c634e-5b1f-4595-b875-02688f98a23eqwertynoon<p>Hi.</p> <p>Try to encrease</p> <p>#define UART_BUF_SIZE 20</p> <p>to 255 or 1000</p><div style="clear:both;"></div>